RS2 - a new lease of life

[Jamo]

Makes absolutely no difference if it was moved there as long as the flexi is in the system around that point

[epic]

Not true! if you get an impact on the bottom of the downpipe on a speed ramp / sleeping policeman there is no protection from the shock going straight up to the turbo and exhaust manifold.

This is the opinion of RS fabrications and MRC.

[Jamo]

Not true! if you get an impact on the bottom of the downpipe on a speed ramp / sleeping policeman there is no protection from the shock going straight up to the turbo and exhaust manifold.

This is the opinion of RS fabrications and MRC.

And if you mount it in the plane vertically of the downpipe you get less flex to horizontal engine movements and SS expansions.

swings and roundabouts

which occurs more often, engine movement during driving or hitting speed ramps

Originally MRC had it in the downpipe more to do with concerns over manifold cracking http://www.s2forum.com/forum/showpos...9&postcount=84

[epic]

Nothing to do with which occurs more often. You want to have everything covered.

You wouldn't stay that the stereo in the car was more important than the seatbelts even though you listen to the stereo everyday.

Most downpipes I've seen have had some impact at some point in their life.

[Ross]

Perhaps I'll put a second flexi mid downpipe and keep everyone happy

I'm on stock suspension so clearance isn't an issue anyway, it's like an 80 monster truck compared to H&Rs...

[Jamo]

Is it mapped yet?

[Error404]

the downpipe emerges pretty much exactly between the wheels, ground clearance should not be any issue. If you hit something large enough to hit the downpipe you've gone off road and this should be the least of your worries IMHO.

[Jamo]

Exactly Error

[pixsaudisex2]

I would Extend your cat brackets up to prevent any hits then,,,

[Sonic]

Is it mapped yet?

Should be by now

[Ross]

Should be by now

I wish

On a positive... a few nasty boost leaks I'd have never noticed are now sorted, the EV14's are fitted - I'll get some pics - and I may have better news soon.

[Sonic]

Good things come to those who wait... i'll expect a phone call when it's done

[Ross]

All was well and good until we found the MAF readings were all over the place. Reading too high at idle, too low on boost. It was causing some lean running and rather than map around it we went for the 'do it properly' approach - using a known good nearly-new RS2 MAF.

Round #2 and things were looking much better until the clip holding the PCV value together popped off... in now dark conditions this involved losing skin to the back of a baking hot cylinder head but eventually everything was working and the intake was holding pressure again.

Third time proved to be lucky. I was worried about my reoccurring vibrations when giving the car some stick during the past couple of weeks, but some tweaking of the snub mount has that sorted in all scenarios except hard left under heavy throttle. A good 1/3 tank of fuel later and the car was mapped... I chickened out of giving a few hard launches until I replace the CV joint, so launch control will be configured at a later date :mischeif:

The headline figures are peak boost of 2.1 bar peak with 1.8 bar at 6000rpm and 1.55 bar at the redline. A safe 80% peak duty on the Bosch 550 (510cc) injectors points to approx. 410bhp, looking forward to getting it on a dyno. I really don't care about the figure to be honest, it feels smooth and progressive and is seriously quick!

Hopefully Dmitri will provide some logs soon, but I need to get set up to provide some FATS times and schedule a dyno run. I just need a new RS2 MAF before I drive it in anger again, which is proving impossible

[s2_bo]

Good work Ross, who did the mapping?

[Jamo]

What rpm is peak boost at?